EP 1207216 A1 20020522 - COATED HARD ALLOY
Title (en)
COATED HARD ALLOY
Title (de)
BESCHICHTETE HARTLEGIERUNG
Title (fr)
ALLIAGE DUR RECOUVERT
Publication
Application
Priority
- JP 0003927 W 20000615
- JP 17473799 A 19990621
Abstract (en)
A coated hard metal which has high resistance against wear, chipping, welding, and flaking is offered. The coated hard metal is provided with an inner layer, intermediate layer, and outer layer on the surface of the hard metal. The inner layer includes a layer comprising at least one member selected from the group consisting of (a) the carbides, nitrides, borides, and oxides of the elements belonging to the IVa, Va, and VIa groups in the periodic table and (b) the solid solutions of these. The intermediate layer includes a layer comprising at least one member selected from the group consisting of aluminum oxide, zirconium oxide, and their solid solution. The outer layer includes a layer of titanium carbonitride having a columnar structure. In a cross section showing the structure of the coated hard metal, the relation between "Amax," which signifies the maximum roughness at the outer face of the intermediate layer, and "Bmax," which signifies the maximum roughness at the outer face of the layer of titanium carbonitride having a columnar structure in the outer layer, satisfies equation 1. <DF NUM="equation 1,">(Bmax/Amax) < 1 </DF> where 0.5 mu m < Amax < 4.5 mu m, and 0.5 mu m </= Bmax </=4.5 mu m. <IMAGE>
IPC 1-7
IPC 8 full level
C23C 16/36 (2006.01); C23C 30/00 (2006.01)
CPC (source: EP KR US)
C23C 16/36 (2013.01 - EP KR US); C23C 30/005 (2013.01 - EP US); Y10T 428/24364 (2015.01 - EP US); Y10T 428/24628 (2015.01 - EP US); Y10T 428/24975 (2015.01 - EP US); Y10T 428/265 (2015.01 - EP US)
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
EP 1207216 A1 20020522; EP 1207216 A4 20060830; EP 1207216 B1 20080123; DE 60037893 D1 20080313; DE 60037893 T2 20080521; IL 145465 A0 20020630; IL 145465 A 20050320; JP 4593852 B2 20101208; KR 100671919 B1 20070122; KR 20020019467 A 20020312; US 6756111 B1 20040629; WO 0079022 A1 20001228
DOCDB simple family (application)
EP 00937266 A 20000615; DE 60037893 T 20000615; IL 14546500 A 20000615; JP 0003927 W 20000615; JP 2001505363 A 20000615; KR 20017016352 A 20011220; US 98082001 A 20011207